Information Gathering

cURL For OSINT – Unlocking The Power Of Command Line Tools For Intelligence Gathering

cURL is a command line tool created in 1998 by Daniel Stenberg, a Swedish Developper/Programmer.
Daniel Stenberg’s website. The latest version of the Tool and the code is open source.

What Exactly Does cURL dD?

I am not a cURL expert and it’s quite difficult giving an exact explanation so I will try and give the most basic explanation.

cURL means Client URL and you already know from above that it’s a command line tool, so it’s basically a tool that permits/enables data transfer over many network protocols (HTTPS, HTTP, FTP, it also supports SSL Certificates).

The tool communicates with a web server with a URL and tells the server the data to be sent or received. (yes you read that correctly, the tool can do both)

Difficulty

cURL is fairly easy to use, and if you have never opened your Terminal before, now is the time to do so.

Installation

I simply installed cURL with Homebrew
Install Command: $ brew install curl

Once you have installed cURL, you can also install Grep: (more info on grep later on)
Install Command: $ brew install grep

Commands

Now that you have everything installed, we are good to go, so let’s have a look at some commands for OSINT (Open-Source Intelligence).

IP Address Information

Finding Your Own IP

Commands for finding the IP address of the device you are on: (type each command separately, each command does the same thing)

$ curl api.ipify.org
$ curl ipinfo.io/ip
$ curl ifconfig.me

Commands to get your IPV4 and IPV6 addresses:

$ curl -4 icanhazip.com
$ curl -6 icanhazip.com

For more information click here.

Varshini

Varshini is a Cyber Security expert in Threat Analysis, Vulnerability Assessment, and Research. Passionate about staying ahead of emerging Threats and Technologies.

Recent Posts

cp Command: Copy Files and Directories in Linux

The cp command, short for "copy," is the main Linux utility for duplicating files and directories. Whether…

6 days ago

Image OSINT

Introduction In digital investigations, images often hold more information than meets the eye. With the…

6 days ago

cat Command: Read and Combine File Contents in Linux

The cat command short for concatenate, It is a fast and versatile tool for viewing and merging…

6 days ago

Port In Networking

What is a Port? A port in networking acts like a gateway that directs data…

6 days ago

ls Command: List Directory Contents in Linux

The ls command is fundamental for anyone working with Linux. It’s used to display the files and…

6 days ago

pwd Command: Find Your Location in Linux

The pwd (Print Working Directory) command is essential for navigating the Linux filesystem. It instantly shows your…

7 days ago